Just finished with the install of my new FASS. Took a little longer than I would have thought and my buddy had to fab me a new mounting bracket as we both realized the one shipped would not work as illustrated. The truck in the instructions is a 2500 and the spring perches on my 3500 SRW are much bigger than what is pictured. Having got past all that that thing ROCKS!! Took three bumps on the motor to get primed then hit 17 psi and never looked back. I set my VA box to 100 and my EZ to 3 and tried to pull done the fuel pressure. It did dip down to 15 psi for a brief second then recovered. My lift pump would hit 8 psi at idle, 6 psi cruising and would suck into a vacuum on WOT runs. All in all, very happy with the setup. I also took some before pics to send to Brad for comparison.